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Energy

Definition

noun, plural: energies

(1) Tthe capacity for work.

(2) The ability to do work, or produce change.


Supplement

Energy exists in different forms but is neither created nor destroyed; it simply converts to another form. Examples of energy include: kinetic, potential, thermal, gravitational, elastic, electromagnetic, chemical, nuclear, and mass. Energy can be expressed in joules or ergs

In biology, energy is often stored by cells in biomolecules, like carbohydrates (sugars) and lipids. The energy is released when these molecules have been oxidized during cellular respiration. The energy released from them when they are oxidized during cellular respiration is carried and transported by an energy-carrier molecule called ATP.

Word origin: From Ancient Greek ἐνέργεια (energeia) "action, act, work", < ἐνεργός (energos) "active" < ἐν (en) "in" + ἔργον (ergon) "work".

Related forms: energize (verb), energetic (adjective).
Related phrases: kinetic energy, potential energy, solar energy.


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Re: Why is ATP rather than GTP, CTP or TTP the energy currency?

The above reply is very interesting, thank you! I have wondered for a while what drives protein synthesis forward in terms of energy, and why don't ribosomes also catalyse the reverse reaction of peptide formation, now I guess it's due to the GTP hydrolysis? But I also have some questions ...

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by Maus
Tue Feb 03, 2015 6:46 pm
 
Forum: Molecular Biology
Topic: Why is ATP rather than GTP, CTP or TTP the energy currency?
Replies: 6
Views: 9517

Does brinjal have negative energy?

Please excuse me if this sounds silly(Well,it did to me when I first heard about it!)-Is it true that brinjal have some negative energy in it??I know this sounds super silly-a person who is kind of spiritual-told myself and my family once about this and I thought what nonsense is this-But ...

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by Athira
Fri Jan 16, 2015 8:06 am
 
Forum: General Discussion
Topic: Does brinjal have negative energy?
Replies: 0
Views: 464

holographic origin of life

... random) and this system was becoming more and more complex. The same things happens in a flask with chemicals if we continuously provide external energy in the long term. The system will react arbitrarily and will become more complex. Some pathways will be more favourable (especially due to repeatabilty, ...

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by minasole
Thu Jan 01, 2015 9:02 am
 
Forum: Evolution
Topic: holographic origin of life
Replies: 15
Views: 27212

Re: Why do Africans have large noses and lips?

... with a wider nose though. Physical activity in a hotter climate is more demanding than when it is cool (because the body needs to spend some energy just for the cooling processes) and thus the body requires more oxygen. Having a wider nose and nostrils facilitates breathing in more air thereby ...

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by kristi2374
Mon Dec 29, 2014 2:07 am
 
Forum: Human Biology
Topic: Why do Africans have large noses and lips?
Replies: 35
Views: 253532

Re: Beginner Microbiologist, looking for a place to start.

... gene expression and its control, protein structure, mechanisms of protein catalysis, synthetic pathways of biological building blocks, free energy. It's a start at least, if you get a handle on those topics you'll be talking comfortably with 3rd year college microbiology students. On to ...

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by jonmoulton
Mon Dec 15, 2014 5:33 pm
 
Forum: General Discussion
Topic: Beginner Microbiologist, looking for a place to start.
Replies: 1
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